Port aggregation protocol pagp, link aggregation control protocol lacp, or on. You can configure maximum 16 ports to form a channel depending on ios version and platform. You can also configure lacp protocol in cisco switches for etherchannel. Each etherchannel can consist of up to eight compatibly configured ethernet ports. Configure lacp on catalyst l2 fixed configuration switch that runs cisco ios software. Etherchannel is what cisco called ethernet link bond initially. Etherchannel is a port link aggregation technology developed by cisco, which provides faulttolerant highspeed links between switches, routers, and servers etherchannel technology allows multiple physical ethernet links fast ethernet or gigabit ethernet to combine into one logical channel there are two protocols used for negotiating etherchannel and link aggregation. The etherchannel provides fullduplex bandwidth up to 800 mbs fast etherchannel or 8 gbs gigabit etherchannel between your switch and another switch or host.
Catalyst 3560 switch software configuration guide, release. Layer 2 configuration guide, cisco ios xe gibraltar 16. All interfaces in each etherchannel must be the same speed and duplex, and both ends of the channel must be configured as either a layer 2 or layer 3 interface. We have 2 cisco switches 6509 as core in the network.
We configured the network connections between cisco switches and servers considering the suggestions on. Etherchannel protocols to form an etherchannel, there are 2 protocols, port aggregation protocol pagp and link aggregation control protocol lacp. Most of the issues with etherchannels link aggregation are because of misconfiguration. Configuring cisco lacp etherchannel derpy networking. To every link between systems that operate lacp, the software assigns a unique priority made up of these elements in priority order. The following is an example of how to configure an lacp802.
As you can see the protocol is now lacp and interfaces fa0 and fa014 are active. The 6509 are connected in hsrp high availability l2 configuration. Etherchannel is enabled by the standardised vendor independent lacp protocol which creates one virtual link out of multiple physical links. Configuring etherchannel utilizing lacp free ccna workbook. Catalyst 4500 series switch cisco ios software configuration. Cisco 7600 series router software configuration guide. You also configure pagp or lcap at this time by specifying a mode, as listed in.
Etherchannel configuration by edward tetz etherchannel has been a part of the cisco ios for many years, so you should find that all your switches support it with proper configuration. Lacp works in a similar way to pagp, only its multivendor or standard channeling protocol. Using link aggregation control protocol lacp, cisco switches can negotiate link aggregation with switches from different vendors that support 802. Cisco trunk e etherchannel gianrico fichera home page. I have an etherchannel up that is an access etherchannel and it works fine, the problem comes when i try to trunk it. Some noncisco vendors still support it, but the majority supports lacp only.
These protocols manage the channel establishment between the switches. Cisco defines etherchannel as an aggregate of port configured manually or configured automatically by using pagp or lacp. In this way you can configure pagp in cisco switches. There are different modes in which you can configure your interface. Etherchannel configuration with example icnd2 200105.
Manual etherchannel configuration in cisco switches using. How to configure etherchannel port aggregation protocol. Configuring windows server 2012 r2 nic teaming with. Sets the interface to respond to lacp data if it receives negotiation requests from other systems the following example will configure etherchannel to use group ports 11 and 12 on the switch together using pagp as the protocol. Lacp facilitates the automatic creation of etherchannels by exchanging lacp packets between ethernet ports. Because all that information you type in portchannel configuration mode will be automatically copied to those main physical interfaces. Trunked etherchannel between switch and firepower 4120 i am having issues creating an trunked etherchannel between a switch and an asa firepower 4120. E, e14, e and e14 of each of the cisco nexus are attached to gi219, gi220, gi221 and gi222 of the cisco 6500 respectively theres a network diagram attached. It allows grouping of several physical ethernet links to create one logical ethernet link for the purpose of providing faulttolerance and highspeed links between switches, routers and servers. Etherchannel is a cisco trademarked term its the technology used to group multiple physical interfaces together while other vendors use link aggregation more frequently. Cisco switch etherchannel configuration lacp pagp in this article we will describe how to configure both lacp and pagp etherchannels on cisco switches. Manual etherchannel configuration without using any negotiation protocol listed above link aggregation control protocol lacp is an industry standard defined in ieee 802. I dont know why they have that separate command, maybe someone else can chime in why thats even there.
D down p in portchannel i standalone s suspended h hotstandby lacp only r layer3 s layer2 u unsuitable for bundling u in use f failed to allocate aggregator d default port number of channelgroups in use. Configuring etherchannel and link state tracking cisco. The idea is to bundle fastethernet 0 and 014 into an etherchannel but this is not working. Trunked etherchannel between switch and firepower 4120 cisco. Windows server 2012 r2 built in nic teaming code enables link aggregation of multiple network adapters with same speeds for outbound traffic from the host. Lacp supports the automatic creation of etherchannels by exchanging. Our second switch is already configured up,so were just going to do our configuration here on dswitch1. To take advantage of inbound traffic aggregation, the switch ports will have to be configured for etherchannel. Etherchannel configuration on cisco switch learn linux. In the example below, an already configured switchindependent nic team is converted to static. Cisco switch layer2 layer3 design and configuration.
Lacp packets are exchanged only between ports in passive and active modes. You can configure etherchannels manually or use the. Cisco me 3400e ethernet access switch software configuration. Catalyst 4500 series switch software configuration guide. Configure both ends of the etherchannel in the same mode. I never understood the part of cisco documentation that says pagp silent mode can be used if the partner is not pagpcapable. See below from cisco catalyst 6500 series switch cisco ios software configuration guide you can configure etherchannels manually or you can use the port aggregation control protocol pagp or, with release 12. Lacp supports the automatic creation of etherchannels by exchanging lacp packets between lan ports. A port in the active mode can form an etherchannel with another. Lacp allows cisco switches to manage ethernet channels between switches that conform the 802.
In this lesson well take a look at some common issues with etherchannels. If you configure more than eight links for an etherchannel group, the software automatically decides which of the hotstandby ports to make active based on the lacp priority. Switchrouter ports can form an etherchannel when they are in different lacp modes as per below criteria. When you configure one end of an etherchannel in either pagp or lacp mode, the system negotiates with the other end of the channel to determine which ports should become active. The protocol learns the capabilities of lan port groups dynamically and informs the other lan ports. You can configure etherchannels manually or you can use the port aggregation control protocol pagp or the link aggregation control. Etherchannel bundles individual ethernet links into a single logical link that provides bandwidth up to 1600 mbps fast etherchannel, full duplex or 16 gbps gigabit etherchannel between two cisco catalyst switches. The configuration is working but we got a lot of messages in 6509. Etherchannel lacp configuration catalyst 3750x hi, when you configure an etherchannel, configuration changes applied to the portchannel interface apply to all the physical ports assigned to the portchannel interface, and configuration changes applied to the physical port affect only the port where you apply the configuration. For additional information relating to configuring of etherchannel link aggregation with esxesxi and cisco hp switches, check out vmware knowledge base article sample configuration of.
Keep in mind that pagp can only be used between cisco devices while lacp is a ieee standard, you can use it to form. On lappelle aussi bonding, lag, etherchannel, ou encore portchannel. Instructor alright, so here we are in my environment. Etherchannel technology allows multiple physical ethernet links fast ethernet or gigabit ethernet to combine into one logical channel.
Cisco devices running ios support single port configuration for lacp. For example, ent0 and ent1 can be aggregated into an etherchannel adapter called en3. Catalyst 2960 and 2960s software configuration guide, 12. Configure etherchannel port aggregation protocol pagp and link aggregation control protocol lacp duration. Depending on the platform and for lacp etherchannel in case of 3850s, you can bundle up to 16 interfaces of the same type in the etherchannel but only up to eight ports can be active at one time. Software configuration guide, cisco ios release 15. Etherchannel has been a part of the cisco ios for many years, so you should.
Both the active and passive lacp modes enable ports to negotiate with partner ports to an etherchannel based on criteria such as port speed and, for layer 2 etherchannels, trunking state and vlan numbers ports can form an etherchannel when they are in different lacp modes as long as the modes are compatible. This is the output of the show etherchannel summary on the cisco 6500. Port aggregation protocol pagp, link aggregation control protocol lacp. We can create etherchannel using pagp, lacp, or static on. When selected, the etherchannel will request lacp packets from its. One place to go to verify your etherchannel bundle is. In the world of etherchannel technology there are two types of dynamic channelgroup protocols, port aggregation protocol pagp which is a cisco proprietary protocol and link aggregation control protocol lacp which is the ieee standard.
The messages sent by pagp are always sent to the known multicast addresses 0ccccccc and 0x0104 2 protocol code. Bipin is a freelance network and system engineer with expertise on cisco, juniper, microsoft, vmware, and other technologies. Configure etherchannel pagp and lacp in packet tracer. Configure lacp etherchannel in cisco ios switch the physical switch ports running lacp protocol can be either in active or passive mode. So they should all match in the end, but the configuration is done at the portchannel mode. Whereas, in passive mode, the port just waits for remote switch port to initiate lacp negotiation.
Pagp cisco proprietary enables the catalyst switches to learn the capabilities of each interface assigned to an etherchannel group and activate interfaces of similar configuration to form a portchannel. Keep in mind that the configuration of all physical interfaces has to match. Pagp oppure una configurazione statica priva di protocollo. It is not constrained by the restriction of per module setting. Sample configuration of etherchannel link aggregation control protocol lacp with esxiesx and cisco h for lacp deployments only with 5. Do not be afraid to enable it on a pair of ports and try it.
Catalyst 3750x and 3560x switch software configuration. A port in the active mode can form an etherchannel with another port. Pagp being cisco s proprietary protocol and lacp being the open standard. The nonsilent option of pagp adds the detection of unidirectional links, similar to what udld does. An etherchannel is a link aggregation technology whereby two switches are connected together with multiple interfaces which are bundled together to form a single logical interface portchannel therefore increasing bandwidth between the switches. Etherchannel is a port link aggregation technology developed by cisco, which provides faulttolerant highspeed links between switches, routers, and servers. The same type of command would be used on the switch to which switch1 is connected. How to configure your switchports for an lacp etherchannel. All ports in each etherchannel must be configured as layer 2 ports.
You can configure an etherchannel in one of these modes. You would need dot1q trunk mode if youre tagging multiple vlans across the links which is common for esxi hosts with multiple networks on the same nics. Lacp link aggregation control protocol lacp is an open standard protocol and published under the 802. The channel protocol lacp is not absolutely needed it knows when you add channelgroup x mode active that it is lacp. Etherchannel is a port link aggregation technology or portchannel architecture used primarily on cisco switches. How to configure etherchannel link aggregation control. Eight of the ports are in active mode and the other eight are in hotstandby mode. In active mode, the port actively tries to form lacp etherchannel with remote switch port.
Mode 4 provides link aggregation according to the 802. Port aggregation protocol pagp is a cisco proprietary protocol which is used for the automated, logical aggregation of ethernet switch ports, known as an ether channel. Port aggregation protocol pagp port aggregation protocol is a cisco proprietary protocol used to form an etherchannel. Configuring link aggregation with etherchannel ciscozine. Sample configuration of etherchannel lacp with esxi and. An etherchannel can be created from between two and eight active fast, gigabit or 10.
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